<?php
$arr = ['stefen', 'male', 28, 'firefox@163.com', 95];
$arr2 = array(
    'name' => 'stefen',
    'sex ' => 'male',
    'age' => 28,
    'email' => 'firefox@163.com',
    'score' => 95
);
print_r( $arr );
print_r( $arr2 );